A107297 - OEIS

A107297

Limit of the string substitution 1->{1, 3, 1, 1}, 2->{1}, 3->{2}.

1, 3, 1, 1, 2, 1, 3, 1, 1, 1, 3, 1, 1, 1, 1, 3, 1, 1, 2, 1, 3, 1, 1, 1, 3, 1, 1, 1, 3, 1, 1, 2, 1, 3, 1, 1, 1, 3, 1, 1, 1, 3, 1, 1, 1, 3, 1, 1, 2, 1, 3, 1, 1, 1, 3, 1, 1, 1, 1, 3, 1, 1, 2, 1, 3, 1, 1, 1, 3, 1, 1, 1, 3, 1, 1, 2, 1, 3, 1, 1, 1, 3, 1, 1, 1, 3, 1, 1, 2, 1, 3, 1, 1, 1, 3, 1, 1, 1, 1, 3, 1, 1, 2, 1, 3

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OFFSET

1,2

LINKS

Table of n, a(n) for n=1..105.

MATHEMATICA

s[1] = {1, 3, 1, 1}; s[2] = {1}; s[3] = {2};

t[a_] := Flatten[s /@ a];

p[0] = {1}; p[1] = t[p[0]]; p[n_] := t[p[n - 1]]

aa = p[5]

CROSSREFS

Cf. A106748, A106749.